Exercise device



FIG. 1 is a front perspective view of the exercise device;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a side view thereof, the opposite side being a mirror image. 

The ornamental design for an exercise device, as shown and described. 